Operational modal analysis of a machine-tool structure during machining operations
| Autor: | Maamar, A., Le, T-P., Gagnol, V., Sabourin, L. |
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| Přispěvatelé: | Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Mécanique et d'Energétique d'Evry (LMEE), Université d'Évry-Val-d'Essonne (UEVE), Association Française de Mécanique, HAL, Univ Évry |
| Jazyk: | francouzština |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | CFM 2017 : Congrès Français de Mécanique CFM 2017 : Congrès Français de Mécanique, 2017, Lille, France CFM 2017-23ème Congrès Français de Mécanique CFM 2017-23ème Congrès Français de Mécanique, Aug 2017, Lille, France |
| Popis: | Colloque avec actes et comité de lecture. Internationale.; International audience; The prediction of modal parameters of a machine-tool structure is important for an accurate knowledge of the dynamic behavior during machining. Usually, the characterization is carried out through an experimental modal analysis with impact and/or shaker tests. However, the excitation, artificially, created by a hammer or a shaker is difficult even impossible to conduct on machine-tool structure or robot structure during machining. These tests are thus performed on machines in rest. Unfortunately, the conditions of a machine in rest are significantly different from its real conditions during machining and accordingly its dynamic properties in service are different from static results of impact or shaker tests. This paper proposes an identification methodology based on operational modal analysis for a machinetool structure during machining operation. The modal identification is done by the transmissibility function based method whose major advantage is the independence of the exciting force's nature and its ability to eliminate harmonic components and reduce their effect on the identified modal model. |
| Databáze: | OpenAIRE |
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